CN110005558B - Carbon deposition prevention fuel injection device - Google Patents
Carbon deposition prevention fuel injection device Download PDFInfo
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- CN110005558B CN110005558B CN201910207389.XA CN201910207389A CN110005558B CN 110005558 B CN110005558 B CN 110005558B CN 201910207389 A CN201910207389 A CN 201910207389A CN 110005558 B CN110005558 B CN 110005558B
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- oxidant
- oil
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- injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
- F02M53/04—Injectors with heating, cooling, or thermally-insulating means
- F02M53/043—Injectors with heating, cooling, or thermally-insulating means with cooling means other than air cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
- F02M53/04—Injectors with heating, cooling, or thermally-insulating means
- F02M53/08—Injectors with heating, cooling, or thermally-insulating means with air cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/04—Fuel-injectors combined or associated with other devices the devices being combustion-air intake or exhaust valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/06—Fuel-injection apparatus having means for preventing coking, e.g. of fuel injector discharge orifices or valve needles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
Abstract
The invention discloses a carbon deposition prevention fuel injection device, which comprises: a fuel injection mechanism and an oxidant injection mechanism; the fuel injection mechanism comprises an oil pipe and a fuel nozzle assembly; the oil pipe comprises an oil inlet section and an injection section, wherein the oil inlet section is arranged at one side far away from the combustion chamber, and the injection section is arranged at one side close to the combustion chamber; the oil nozzle assembly is arranged at the end part of one side of the injection section, which is far away from the oil inlet section; the fuel oil which sequentially flows through the oil inlet section and the high-temperature end and is ejected by the oil nozzle assembly, the oxidant ejected by the oxidant ejecting mechanism and the high-temperature flue gas are mixed in the mixing channel of the mixing pipe and then flow to the combustion chamber; the injection section extends into the mixing channel; the side wall of the injection section is provided with a channel for circulating a cooling fluid. According to the invention, the cooling fluid exchanges heat with the oil pipe, so that the fuel oil in the fuel oil channel of the oil pipe is cooled, the generation of carbon deposition is reduced, the carbon deposition in the fuel oil channel is reduced, the fuel oil injection quality is improved, and the problem that the working performance of an engine is influenced due to the fact that the fuel oil nozzle assembly is blocked by the carbon deposition is avoided.
Description
Technical Field
The invention relates to the technical field of fuel injection devices of engines, in particular to a carbon deposition prevention fuel injection device.
Background
The fuel injection device is widely applied to equipment such as an internal combustion engine, a gas turbine, a Stirling engine, a fuel oil boiler and the like, is a core part of such thermal energy equipment, directly influences the performance and the efficiency of the equipment, and can cause shutdown if the equipment is damaged. In continuous combustion equipment such as boilers, gas turbines, and stirling engines, a pressure atomizing fuel injection device, also called a centrifugal fuel injection device, is generally used to improve the spray quality. The inside independent vortex body that has of this kind of injection apparatus, the fuel can produce the rotation when the tiny whirl groove in the vortex body outside, improves the atomization quality.
In the stirling engine, a gas recirculation technique is employed in order to reduce the combustion temperature and achieve flameless combustion. High-temperature flue gas is injected through high-speed jet flow of air inlet, and the injected high-temperature flue gas can be mixed with air inlet at the front end part of the oxygen nozzle and then enters the combustion chamber together with the air inlet. In this process, the front part of the fuel injector is always in a high temperature environment for a long time, so that the temperature of the fuel injector, especially the fuel injector nozzle is greatly increased. On one hand, the fuel oil in the flow channel is decomposed at high temperature to generate coking and carbon deposit to block a fine swirl groove on the swirl body; on the other hand, on the outer surface of the fuel injection device, the incompletely combusted fuel can generate carbon deposit under the action of high temperature to block a fuel nozzle. Therefore, those skilled in the art need to solve the problem of carbon deposition of the fuel injection device due to high temperature.
Disclosure of Invention
The invention aims to provide a carbon deposition prevention fuel injection device, wherein cooling fluid exchanges heat with an oil pipe, so that the temperature of the oil pipe is reduced, the temperature of a fuel passage of the oil pipe is reduced, the generation probability of carbon deposition is reduced, the carbon deposition of the fuel passage is reduced, the performance and the efficiency of the fuel injection device and an engine are ensured, the damage to the fuel injection device and the engine is reduced, the engine is prevented from being stopped, the fuel injection quality of the fuel injection device is improved, and the working performance of the engine is prevented from being influenced by the blockage of a fuel nozzle assembly due to the carbon deposition.
The technical scheme provided by the invention is as follows:
an anti-carbon deposition fuel injection device comprising:
a fuel injection mechanism and an oxidant injection mechanism;
the fuel injection mechanism comprises an oil pipe and a fuel nozzle assembly;
the oil pipe comprises an oil inlet section and an injection section, wherein the oil inlet section is arranged at one side far away from the combustion chamber, and the injection section is arranged at one side close to the combustion chamber; the fuel nozzle assembly is arranged at the end part of one side of the injection section, which is far away from the oil inlet section;
the fuel oil which sequentially flows through the oil inlet section and the injection section and is injected by the fuel nozzle assembly, the oxidant injected by the oxidant injection mechanism and the high-temperature flue gas are mixed in the mixing channel of the mixing pipe and then flow to the combustion chamber;
the injection section extends into the mixing channel;
the side wall of the injection section is provided with a channel for circulating cooling fluid.
In the technical scheme, the cooling of the injection section is realized by the cooling fluid flowing through the channel arranged on the side wall of the injection section; in practical application, the cooling fluid exchanges heat with the oil pipe, so that the oil pipe is cooled, the fuel oil channel of the oil pipe is cooled, the generation probability of carbon deposition is reduced, the carbon deposition of the fuel oil channel is reduced, the performance and the efficiency of the fuel oil injection device and the engine are ensured, the damage to the fuel oil injection device and the engine is reduced, the shutdown of the fuel oil injection device is avoided, the fuel oil injection quality of the fuel oil injection device is improved, and the working performance of the engine is prevented from being influenced by the blockage of a fuel oil nozzle assembly due to the carbon deposition; meanwhile, because the high-temperature flue gas is mixed with the oxidant and the fuel oil, the oxidant can absorb the heat of the high-temperature flue gas, the air inlet temperature of the oxidant is improved, the density of the oxidant is reduced, the flow speed is improved, a better injection effect is generated, and the combustion quality of the combustion chamber is improved.
Further preferably, the fuel nozzle assembly comprises a plug, a swirl body and a fuel nozzle; the fuel nozzle is coaxially arranged with and communicated with the oil pipe; the plug and the rotational flow body are accommodated in the inner space of the fuel nozzle.
In the technical scheme, in practical application, the fuel nozzle assembly can be a centrifugal fuel nozzle assembly with better atomization quality or a non-centrifugal fuel nozzle assembly with poorer atomization quality; the method can be specifically set according to actual needs.
Further preferably, the oil pipe comprises an oil head connecting body, and the oil head connecting body is coaxial with the oil pipe; one end of the oil head connecting body is connected with the oil pipe, and the other end of the oil head connecting body is connected with the fuel nozzle.
In the technical scheme, the connection coordination and the applicability of the fuel nozzle and the oil pipe are improved through the oil joint connecting body.
Further preferably, the fuel nipple is detachably connected to the fuel nozzle.
In the technical scheme, the same type of fuel nozzle assembly or different types of fuel nozzle assemblies can be replaced according to requirements, so that the maintenance cost and the use cost of the engine are reduced; and improves engine coordination with the fuel injector assembly.
Further preferably, the oxidant injection mechanism includes a first oxidant pipe, a second oxidant pipe, and an oxidant nozzle; the first oxidant pipe is sleeved on the outer side of the oil pipe; the second oxidant pipe is sleeved outside the first oxidant pipe, and the first oxidant pipe and the second oxidant pipe form an oxidant pressure stabilizing chamber; the oxidant nozzle is sleeved on the outer side of the oil pipe and is respectively butted with the first oxidant pipe and the second oxidant pipe; one end of the oxidant nozzle is communicated with the oxidant pressure stabilizing chamber; the other end of the oxidant nozzle is communicated with the mixing channel.
In the technical scheme, the oxidant injection mechanism has a good injection effect, and the stability and efficiency of oxidant injection are ensured through the oxidant pressure stabilizing chamber.
Further preferably, a concave-convex matching structure is arranged at the contact position of the oxidant nozzle and the first oxidant pipe; and/or a concave-convex matching structure is arranged at the contact position of the oxidant nozzle and the second oxidant pipe.
In the technical scheme, the concave-convex matching structure improves the alignment and the alignment among all parts (the oxidant nozzle and the first oxidant pipe, the oxidant nozzle and the second oxidant pipe), so that the assembling of the invention is convenient, and the assembling efficiency is improved.
Further preferably, the outer side wall of the first oxidant pipe close to one side of the oil inlet section is raised along the radial direction of the oil pipe to form a step surface; and the end surface of one side of the second oxidant pipe, which is close to the oil inlet section, is abutted against the step surface.
In the technical scheme, the second oxidant pipe is fixed through the first oxidant pipe and the oxidant nozzle, so that the structural compactness of the fuel injection device is improved.
Further preferably, the passage extends from the injection section to the oil inlet section.
In the technical scheme, the extension of the channel can improve the heat exchange quantity between the cooling fluid and the high-temperature flue gas, improve the temperature drop quantity of the oil pipe, reduce the temperature of the oil pipe and further avoid the generation of carbon deposition.
Further preferably, the cooling fluid contains the oxidant, and the passage communicates with the oxidant injection mechanism such that the cooling fluid flows to the mixing passage.
In the technical scheme, when the cooling fluid contains the oxidant, the cooling fluid can also enter the combustion chamber for combustion, so that the waste of the oxidant is avoided, the utilization rate and the resource of the oxidant are improved, and the use cost of the invention is reduced.
Further preferably, the passages are sequentially arranged at intervals along the radial direction of the oil pipe; and/or the channel is a spiral channel wound on the side wall of the oil pipe.
In the technical scheme, the contact area between the cooling fluid and the oil pipe is increased by the multi-layer arrangement and/or the spiral arrangement of the channel, so that the heat exchange amount between the cooling fluid and the high-temperature flue gas is increased, the temperature drop amount of the oil pipe is increased, the temperature of the oil pipe is reduced, and the carbon deposition is avoided.
The carbon deposition prevention fuel injection device provided by the invention can bring at least one of the following beneficial effects:
1. in the invention, the cooling of the injection section is realized by the cooling fluid flowing through the channel arranged on the side wall of the injection section; in practical application, the cooling fluid exchanges heat with the oil pipe, so that the oil pipe is cooled, the fuel oil channel of the oil pipe is cooled, the generation probability of carbon deposition is reduced, the carbon deposition of the fuel oil channel is reduced, the performance and the efficiency of the fuel oil injection device and the engine are ensured, the damage to the fuel oil injection device and the engine is reduced, the shutdown of the fuel oil injection device is avoided, the fuel oil injection quality of the fuel oil injection device is improved, and the working performance of the engine is prevented from being influenced by the blockage of a fuel oil nozzle assembly due to the carbon deposition; meanwhile, because the high-temperature flue gas is mixed with the oxidant and the fuel oil, the oxidant can absorb the heat of the high-temperature flue gas, the air inlet temperature of the oxidant is improved, the density of the oxidant is reduced, the flow speed is improved, a better injection effect is generated, and the combustion quality of the combustion chamber is improved. Preferably, the invention does not need to change the whole structure of the existing fuel injection device, only needs to change the structure (provided with the channel) of the oil pipe, is easy to realize and has simple structure.
2. In the invention, when the cooling fluid contains the oxidant, the cooling fluid can also enter the combustion chamber for combustion, thereby avoiding the waste of the oxidant, improving the utilization rate and recycling of the oxidant and reducing the use cost of the invention. More preferably, the contact area between the cooling fluid and the oil pipe is increased by the multi-layer arrangement and/or the spiral arrangement of the channel, so that the heat exchange quantity between the cooling fluid and the high-temperature flue gas is increased, the temperature reduction quantity of the oil pipe is increased, the temperature of the oil pipe is reduced, and the generation of carbon deposition is avoided.
Drawings
The above features, technical characteristics, advantages and modes of realisation of the anti-carbon deposition fuel injection device will be further described in the following, in a clearly understandable manner, with reference to the accompanying drawings, which illustrate preferred embodiments.
Fig. 1 is a schematic cross-sectional structure of an embodiment of the present invention.
The reference numbers illustrate:
100. the fuel injector comprises an oil pipe, 101, a fuel channel, 102, a spiral channel, 110, an oxidant injection mechanism, 111, a first oxidant pipe, 1111, a step surface, 112, a second oxidant pipe, 113, an oxidant nozzle, 114, an oxidant pressure stabilizing chamber, 115, an oxidant nozzle, 120, a mixing pipe, 121, a mixing channel, 130, an oil head connecting body, 140, a centrifugal fuel nozzle assembly, 141, a plug, 142, a cyclone body, 143, a fuel nozzle and 144, and a fuel nozzle;
201-207, the direction of the inlet air flow;
301. the flow direction of the high-temperature flue gas;
401-402 fuel flow direction.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, without inventive effort, other drawings and embodiments can be derived from them.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one". In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In one embodiment, as shown in fig. 1, an anti-carbon deposition fuel injection device includes: fuel injection mechanism and oxidant injection mechanism 110; the fuel injection mechanism includes a fuel line 100 and a fuel nozzle assembly; the oil pipe 100 comprises an oil inlet section arranged at one side far away from the combustion chamber and an injection section arranged at one side close to the combustion chamber; the fuel nozzle assembly is arranged at the end part of one side of the injection section, which is far away from the oil inlet section; the fuel oil which sequentially flows through the oil inlet section and the injection section and is injected through the fuel nozzle assembly, the oxidant injected through the oxidant injection mechanism 110 and the high-temperature flue gas are mixed in the mixing channel 121 of the mixing pipe 120 and then flow to the combustion chamber; the injection section extends into the mixing channel 121; the side wall of the injection section is provided with a channel for circulating a cooling fluid. The invention realizes the cooling of the injection section by the cooling fluid flowing through the channel arranged on the side wall of the injection section; in practical application, the cooling fluid exchanges heat with the oil pipe 100, so that the temperature of the oil pipe 100 is reduced, and further the temperature of the fuel oil channel 101 of the oil pipe 100 is reduced, so that the temperature of fuel oil circulating in the fuel oil channel 101 is reduced, the probability of carbon deposition is reduced, the carbon deposition of the fuel oil channel 101 is reduced, the performance and the efficiency of a fuel oil injection device and an engine are ensured, the damage to the fuel oil injection device and the engine is reduced, the shutdown of the fuel oil injection device is avoided, the fuel oil injection quality of the fuel oil injection device is improved, and the working performance of the engine is prevented from being influenced by the blockage of a fuel oil nozzle assembly by the carbon deposition; meanwhile, because the high-temperature flue gas is mixed with the oxidant and the fuel oil, the oxidant can absorb the heat of the high-temperature flue gas, the air inlet temperature of the oxidant is improved, the density of the oxidant is reduced, the flow speed is improved, a better injection effect is generated, and the combustion quality of the combustion chamber is improved.
In the second embodiment, as shown in fig. 1, based on the first embodiment, the fuel nozzle assembly is a centrifugal fuel nozzle assembly 140, which includes a plug 141, a cyclone body 142 and a fuel nozzle 143; the fuel nozzle 143 is disposed coaxially with and communicates with the fuel line 100; the plug 141 and the swirling body 142 are accommodated in an inner space of the fuel nozzle 143. Preferably, the fuel nozzle assembly further comprises an oil nipple 130, the oil nipple 130 being arranged coaxially with the oil pipe 100; one end of the nipple 130 is connected to the oil pipe 100, and the other end of the nipple 130 is connected to the fuel nozzle 143. It should be noted that the fuel injector assembly may be a fuel swirler assembly 140 with better atomization quality or a fuel injector assembly with a non-fuel swirler assembly with a lower atomization quality; the method can be specifically set according to actual needs. Preferably, the fuel nozzle assembly further comprises an oil nipple 130, the oil nipple 130 being arranged coaxially with the oil pipe 100; one end of the nipple 130 is connected to the oil pipe 100, and the other end of the nipple 130 is connected to the fuel nozzle 143. Preferably, the nipple 130 is removably connected to the fuel nozzle 143. Specifically, the fuel nipple 130 and the fuel nozzle 143 may be detachably connected by a screw, a bolt and a nut, or a snap or an insertion. Of course, the fuel nipple 130 and the fuel nozzle 143 may also be fixedly connected; the fuel nozzle 143 may also be fixedly or removably attached directly to the fuel line 100. Preferably, the fuel jets 144 on the fuel nozzle 143 are disposed on the axis of the fuel line 100.
In the third embodiment, as shown in fig. 1, on the basis of the first or second embodiment, the oxidizer injecting mechanism 110 includes a first oxidizer pipe 111, a second oxidizer pipe 112, and an oxidizer nozzle 113; the first oxidant pipe 111 is sleeved outside the oil pipe 100; the second oxidant tube 112 is sleeved outside the first oxidant tube 111, and the first oxidant tube 111 and the second oxidant tube 112 form an oxidant pressure stabilizing chamber 114; the oxidant nozzle 113 is sleeved outside the oil pipe 100 and is respectively butted with the first oxidant pipe 111 and the second oxidant pipe 112; one end of oxidant nozzle 113 is in communication with oxidant plenum 114; the other end of the oxidizer nozzle 113 communicates with the mixing channel 121. The contact portion between the oxidizer nozzle 113 and the first oxidizer pipe 111 has a concave-convex engagement structure. Preferably, the contact position of the oxidant nozzle 113 and the second oxidant pipe 112 is provided with a concave-convex matching structure. Preferably, the outer side wall of the first oxidant pipe 111 close to the oil inlet section is raised along the radial direction of the oil pipe 100 to form a step surface 1111; the end surface of the second oxidant pipe 112 on the side close to the oil inlet section abuts against the step surface 1111. Preferably, the oxidant plenum 114 may be collectively defined by the outer sidewall of the first oxidant tube 111, the inner sidewall of the second oxidant tube 112, and the oxidant nozzle 113. And oxidant plenum 114 may be formed in part by first oxidant tubes 111 and in part by oxidant nozzles 113. And oxidant plenum 114 may be formed by second oxidant tube 112 bulging outward in the radial direction; or may be formed by the first oxidant pipe 111 being inwardly recessed in the radial direction. Preferably, the oxidizer nozzle 113 is provided with a stepped oxidizer jet 115, wherein a small diameter end of the oxidizer jet 115 is disposed near a side of the combustion chamber. Preferably, the end surface of the oxidant nozzle 115 on the side close to the combustion chamber is flush with the end surface of the mixing tube 120 on the side away from the combustion chamber. Preferably, the mixing channel 121 is in a trumpet-shaped structure at the side close to the oxidant nozzle 115, and the large-diameter end of the mixing channel 121 is arranged at the side close to the oxidant nozzle 115.
In the fourth embodiment, as shown in fig. 1, on the basis of the first, second or third embodiment, the channel is a spiral channel 102 wound around the side wall of the oil pipe 100. Preferably, the passage extends from the injection section to the oil intake section. Preferably, the passages are sequentially spaced in a radial direction of the oil pipe 100. It should be noted that the channels may also be linear channels, reticulated channels or curved channels extending along the axis of the tubing 100. When the passage is a spiral passage 102, the passage spirals from the jet section to the oil feed section in the axial direction of the oil pipe 100 around the sidewall of the oil pipe 100. When the passages are arranged in a plurality of rows arranged in the radial direction of the oil pipe 100, the adjacently arranged two rows of passages communicate with each other, thereby increasing the contact area of the cooling fluid with the side wall of the oil pipe 100 and increasing the amount of heat exchange between the cooling fluid and the side wall of the oil pipe 100. Preferably, the cooling fluid contains an oxidant and the channels are in communication with the oxidant injection mechanism 110 such that the cooling fluid flows to the mixing channel 121. Preferably, the passages communicate with the oxidant plenum 114. That is, the sidewall of the first oxidant tube 111 is perforated with through holes that communicate the passageway with the oxidant plenum 114. Preferably, the first and/or second oxidant tubes 111, 112 and the oil tube 100 are channeled for circulation of cooling fluid. Preferably, the passages communicate with the end of the oxidant plenum 114 distal from the combustion side. The cooling fluid may also be oxygen or air, such as when the oxidant is oxygen or air. When the cooling fluid is oxygen, the cooling fluid can be introduced into the channel from the oxygen storage tank; when the cooling fluid is air, the cooling fluid may be introduced into the passageway from the ambient environment by a fan or other ejector device. In practical application, the cooling fluid can circulate from the end part close to the combustion chamber to the end part far from the combustion chamber; of course, the cooling fluid may circulate from the end on the side away from the combustion chamber to the end on the side close to the combustion chamber. When the cooling fluid does not contain an oxidizing agent, the cooling fluid preferably circulates in a circulating system and partially flows to the mixing channel 121; if the cooling fluid is the cooling liquid of the engine, the cooling fluid can be a branch of the cooling liquid circulation system to realize the circulation utilization. Of course, the cooling fluid may also be a new cooling circulation system of the engine to realize the circulation of the cooling fluid. It should be noted that the cooling fluid is a fluid having a temperature lower than that of the high temperature flue gas and can be used to lower the temperature of the oil pipe 100, such as a gas or a liquid.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (8)
1. An anti-carbon deposition fuel injection device, comprising:
a fuel injection mechanism and an oxidant injection mechanism;
the fuel injection mechanism comprises an oil pipe and a fuel nozzle assembly;
the oil pipe comprises an oil inlet section and an injection section, wherein the oil inlet section is arranged at one side far away from the combustion chamber, and the injection section is arranged at one side close to the combustion chamber; the fuel nozzle assembly is arranged at the end part of one side of the injection section, which is far away from the oil inlet section;
the fuel oil which sequentially flows through the oil inlet section and the injection section and is injected by the fuel nozzle assembly, the oxidant injected by the oxidant injection mechanism and the high-temperature flue gas are mixed in the mixing channel of the mixing pipe and then flow to the combustion chamber;
the spraying section extends into the mixing channel, and a channel for circulating cooling fluid is arranged on the side wall of the spraying section;
the oxidant injection mechanism comprises a first oxidant pipe, a second oxidant pipe and an oxidant nozzle;
the first oxidant pipe is sleeved on the outer side of the oil pipe, the second oxidant pipe is sleeved on the outer side of the first oxidant pipe, and the first oxidant pipe and the second oxidant pipe form an oxidant pressure stabilizing chamber;
the oxidant nozzle is sleeved on the outer side of the oil pipe and is respectively butted with the first oxidant pipe and the second oxidant pipe, and one end of the oxidant nozzle is communicated with the oxidant pressure stabilizing chamber; the other end of the oxidant nozzle is communicated with the mixing channel;
the cooling fluid contains the oxidant, and the channels are in communication with the oxidant injection mechanism such that the cooling fluid flows to the mixing channel.
2. The anti-carbon deposition fuel injection device according to claim 1, characterized in that:
the fuel nozzle component comprises a plug, a rotational flow body and a fuel nozzle;
the fuel nozzle is coaxially arranged with and communicated with the oil pipe;
the plug and the rotational flow body are accommodated in the inner space of the fuel nozzle.
3. The soot prevention fuel injection apparatus as defined in claim 2, further comprising:
the oil head connecting body is coaxially arranged with the oil pipe;
one end of the oil head connecting body is connected with the oil pipe, and the other end of the oil head connecting body is connected with the fuel nozzle.
4. The anti-carbon deposition fuel injection device according to claim 3, characterized in that:
the oil head connecting body is detachably connected with the fuel nozzle.
5. The anti-carbon deposition fuel injection device according to claim 1, characterized in that:
a concave-convex matching structure is arranged at the contact position of the oxidant nozzle and the first oxidant pipe; and/or the presence of a gas in the gas,
and a concave-convex matching structure is arranged at the contact position of the oxidant nozzle and the second oxidant pipe.
6. The anti-carbon deposition fuel injection device according to claim 1, characterized in that:
the outer side wall of the first oxidant pipe close to one side of the oil inlet section is protruded along the radial direction of the oil pipe to form a step surface;
and the end surface of one side of the second oxidant pipe, which is close to the oil inlet section, is abutted against the step surface.
7. The carbon deposition prevention fuel injection apparatus as recited in any one of claims 1 to 6, wherein:
the passage extends from the injection section to the oil intake section.
8. The carbon deposition prevention fuel injection apparatus as recited in any one of claims 1 to 6, wherein:
the channels are sequentially arranged at intervals along the radial direction of the oil pipe; and/or the presence of a gas in the gas,
the channel is a spiral channel wound on the side wall of the oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910207389.XA CN110005558B (en) | 2019-03-19 | 2019-03-19 | Carbon deposition prevention fuel injection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910207389.XA CN110005558B (en) | 2019-03-19 | 2019-03-19 | Carbon deposition prevention fuel injection device |
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| CN110005558A CN110005558A (en) | 2019-07-12 |
| CN110005558B true CN110005558B (en) | 2022-06-07 |
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| CN110700961B (en) * | 2019-10-11 | 2023-08-29 | 上海齐耀动力技术有限公司 | Closed Stirling engine underwater power process and system based on aluminum powder combustion |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB441181A (en) * | 1934-05-11 | 1936-01-14 | Bataafsche Petroleum | Fuel injection device for internal combustion engines |
| GB634141A (en) * | 1938-08-27 | 1950-03-15 | Atlas Diesel Ab | Improvements in and relating to fuel atomisers of internal combustion engines operating with liquid fuel injection |
| AT500773B8 (en) * | 2004-08-24 | 2007-02-15 | Bosch Gmbh Robert | INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES |
| CN100557317C (en) * | 2007-11-29 | 2009-11-04 | 北京航空航天大学 | A kind of aerial engine lean premixed preevaporated low contamination combustion chamber |
| CN201517457U (en) * | 2009-09-14 | 2010-06-30 | 上海齐耀动力技术有限公司 | Fuel injector |
| US8881995B2 (en) * | 2010-09-29 | 2014-11-11 | Delavan Inc | Carbon contamination resistant pressure atomizing nozzles |
| CN102400825B (en) * | 2011-12-20 | 2013-08-07 | 余姚市舒春机械有限公司 | Cooling needle valve matching part for marine diesel engine |
| US9574776B2 (en) * | 2013-10-21 | 2017-02-21 | Delavan Inc. | Three-piece airblast fuel injector |
| AT517054B1 (en) * | 2015-04-14 | 2017-02-15 | Ge Jenbacher Gmbh & Co Og | Arrangement of a cylinder head and a fuel injector |
| CN107883406B (en) * | 2016-09-30 | 2024-05-10 | 上海齐耀动力技术有限公司 | Flameless combustion chamber for Stirling engine and method for implementing the same |
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2019
- 2019-03-19 CN CN201910207389.XA patent/CN110005558B/en active Active
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